Bill guard for a cap



FIG. 1 is a front perspective view of a bill guard for a cap showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.

The broken line showing of the cap in FIG. 1 is for illustrative purposes only and forms no part of the clamed design. 

The ornamental design for a bill guard for a cap, as shown and described. 